Body Style Information:
The first version of this engine was made by Roco for Atlas in 1974. These Austrian-made locomotives were available through the early 1980s. Then, in 1992 Atlas contracted with Kato in Japan to produce a new release of this model. Finally, Atlas switched to Chinese Manufacturing in 1997. They then retooled the Chinese version of the engine for DCC in 2006. The original Kato versions are solid runners with flywheels and body-mounted (Rapido) couplers. They also carry low-profile wheels. Some of the later Rapido-equipped models are easy to swap to MTL couplers by removing a simple plastic clip.

The newest versions are modern split-frame designs with flywheels and a "slow speed" motor with "white" LED lights.

Prototype Information:
The EMD GP30 is a 2,250 hp (1,680 kW) four-axle B-B diesel-electric locomotive built by General Motors Electro-Motive Division of La Grange, Illinois between July 1961 and November 1963. A total of 948 units were built for railroads in the United States and Canada (2 only), including 40 cabless B units for the Union Pacific Railroad.

It was the first so-called "second generation" EMD diesel locomotive, and was produced in response to increased competition by a new entrant, General Electric's U25B, which was released roughly at the same time as the GP30. The GP30 is easily recognizable due to its high profile and stepped cab roof, unique among American locomotives. A number are still in service today in original or rebuilt form.

The Louisville and Nashville Railroad (reporting mark LN), commonly called the L&N, was a Class I railroad that operated freight and passenger services in the southeast United States.

Chartered by the Commonwealth of Kentucky in 1850, the road grew into one of the great success stories of American business. Operating under one name continuously for 132 years, it survived civil war and economic depression and several waves of social and technological change. Under Milton H. Smith, president of the company for thirty years, the L&N grew from a road with less than three hundred miles (480 km) of track to a 6,000-mile (9,700 km) system serving thirteen states. As one of the premier Southern railroads, the L&N extended its reach far beyond its namesake cities, stretching to St. Louis, Memphis, Atlanta, and New Orleans. The railroad was economically strong throughout its lifetime, operating both freight and passenger trains in a manner that earned it the nickname, "The Old Reliable."

Growth of the railroad continued until its purchase and the tumultuous rail consolidations of the 1980s which led to continual successors. By the end of 1970, L&N operated 6,063 miles (9,757 km) of road on 10,051 miles (16,176 km) of track, not including the Carrollton Railroad.

In 1971 the Seaboard Coast Line Railroad, successor to the Atlantic Coast Line Railroad, purchased the remainder of the L&N shares it did not already own, and the company became a subsidiary. By 1982 the railroad industry was consolidating quickly, and the Seaboard Coast Line absorbed the Louisville & Nashville Railroad entirely. Then in 1986, the Seaboard System merged with the C&O and B&O and the new combined system was known as the Chessie System. Soon after the combined company became CSX Transportation (CSX), which now owns and operates all of the former Louisville and Nashville lines.

In 1924 Stephan Schaffan, Sr. founded the Atlas Tool Company in Newark, New Jersey. In 1933 his son, Stephan Schaffan, Jr., came to work for his father at the age of sixteen. Steve Jr. built model airplanes as a hobby and frequented a local hobby shop. Being an enterprising young man, he would often ask the owner if there was anything he could do to earn some extra spending money. Tired of listening to his requests, the hobby-store owner threw some model railroad track parts his way and said, "Here, see if you can improve on this".

In those days, railroad modelers had to assemble and build everything from scratch. Steve Jr. created a "switch kit" which sold so well, that the entire family worked on them in the basement at night, while doing business as usual in the machine shop during the day.

Subsequently, Steve Jr. engineered the stapling of rail to fiber track, along with inventing the first practical rail joiner and pre-assembled turnouts and flexible track. All of these products, and more, helped to popularize model railroading and assisted in the creation of a mass-market hobby. The budding entrepreneur quickly outgrew the limitations of a basement and small garage operation. Realizing they could actually make a living selling track and related products, Steve and his father had the first factory built in Hillside, New Jersey at 413 Florence Avenue in 1947. On September 30, 1949, the Atlas Tool Company was officially incorporated as a New Jersey company.

In 1985, Steve was honored posthumously for his inventions by the Model Railroad Industry Association and was inducted into the Model Railroad Industry Hall of Fame in Baltimore, Maryland. In addition, Steve was nominated and entered into the National Model Railroad Association Pioneers of Model Railroading in 1995.